New answers tagged gpio
0
votes
How to create a data signal using pwm from a gpio output?
"I want to write the software from the ground up."
Read the Peripheral documentation
https://www.raspberrypi.com/documentation/computers/processors.html
Choose a language
Write the code.
&...
- 53.5k
1
vote
How to create a data signal using pwm from a gpio output?
Choose a GPIO library.
See https://elinux.org/RPi_GPIO_Code_Samples
Write the code.
- 66.5k
0
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No w1_slave on DS18B20 on Raspberry Pi 3 B+
Silly question, have you enabled the 1-Wire sensor in raspi-config and rebooted?
sudo raspi-config
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0
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Triggering MAPIR camera with PWM via GPIO on RPi
Nevermind. I just realized there is a documentation for it and it doesn't come up nicely in google search. Posting it here if anyone would find it useful.
Link: https://mapir-camera.gitbook.io/mapir-...
- 99
0
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How to install wiringpi on Raspbian
This worked for me
cd /tmp
wget https://project-downloads.drogon.net/wiringpi-latest.deb
sudo dpkg -i wiringpi-latest.deb
Then to check it is working:
gpio -v
- 101
1
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GPIO only outputs 1.8V when using Bluedot
You state "the GPIO pins suddenly output 1.8V" - this is IMPOSSIBLE (unless the GPIO is grossly overloaded). For a lightly loaded circuit the GPIO output will be >2.5V or <0.8V.
It is ...
- 53.5k
2
votes
Accepted
I inverted 2 GPIO pins. Is pi4 dead?
I think you mean "shorted" and not inverted. And yes, this is fatal for the PMIC (power management IC). Your Pi is dead.
- 2,622
0
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LTE-HAT GPIO SIM7600
I have been testing it and I think this needs a certain type of driver or adapter software for the connection to run only by GPIO pins on the Raspberry Pi. I only have been succesfull connecting this ...
- 1
0
votes
hc-sr501 goes high every minute
You need to look at your environment to find the cause of the regular pulse.
I suggest you leave monitor.py running for 5 minutes. Perhaps lots of GPIO are affected.
This requires the pigpio daemon ...
- 66.5k
0
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Connect several sim800l with external power supply to the uart of ip4 and floating ground
Well friends if the circuit worked, is more I edited it by changing the lipo battery power supply for power regulated with lm2596 and a 4700uf capacitor for each sim800l module. Thanks
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How can I send AT commands to raspberry pi 2 serial uart ble module from python script
try this out
import serial
ser = serial.Serial('/dev/ttyUSB2',9600,parity=serial.PARITY_NONE,stopbits=serial.STOPBITS_ONE,bytesize=serial.EIGHTBITS,tim>
while True:
ser.write(bytes("AT\r\...
0
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What is the nominal GPIO Pin Output current?
I know this thread is ancient (but not closed!) however it was really helpful to me so I am contributing what might be a useful update.
Using pigpio you can set the GPIO pin current via "PAD ...
- 1
2
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I am trying to make a camera turn on and off with the press of a button, but the GPIO ports are not working, and it is not acknowledging the button
You need to setup GPIO24 as output at the start of your code:
GPIO.setup(24, GPIO.OUT)
- 6,161
1
vote
Connecting blue LED (3.3V)
Yikes! It is a fallacy to assume that all LEDs "rated" at 3.3V in the parts search matrix have an integrated resistor! The example linked above is a for a family of LEDs intended to be ...
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